The Cyclical Behavior of Equilibrium Unemployment and Vacancies Revisited

This paper argues that the textbook search and matching model cannot generate the observed business-cycle-frequency fluctuations in unemployment and job vacancies in response to shocks of a plausible magnitude. In the United States, the standard deviation of the vacancy-unemployment ratio is almost 20 times as large as the standard deviation of average labor productivity, while the search model predicts that the two variables should have nearly the same volatility. A shock that changes average labor productivity primarily alters the present value of wages, generating only a small movement along a downward-sloping Beveridge curve (unemploymentvacancy locus). A shock to the separation rate generates a counterfactually positive correlation between unemployment and vacancies. In both cases, the model exhibits virtually no propagation.

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A Certificate-Based Provable Data Possession Scheme in the Standard Model

Security and Communication Networks ◽

10.1155/2021/9974485 ◽

2021 ◽

Vol 2021 ◽

pp. 1-12

Author(s):

Caixue Zhou

Keyword(s):

Standard Model ◽

High Efficiency ◽

Public Key Infrastructure ◽

Public Key ◽

Provable Data Possession ◽

The Public ◽

The Standard Model ◽

Identity Based ◽

The Cost ◽

Very High

Certificate-based cryptosystem can not only resolve the private key escrow problem inherent in the identity-based cryptosystem but also reduce the cost of public key certificate management in the public key infrastructure-(PKI-) based cryptosystem. Provable data possession (PDP) can ensure the integrity of users’ data stored in the cloud at a very high probability. By combining these two concepts, we propose a certificate-based PDP scheme. We prove that our scheme is secure in the standard model assuming that the Squ-CDH problem is hard. Based on the index logic table, our scheme can be extended to support dynamic operations easily. Efficiency analysis shows that our scheme has high efficiency.

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Realist Representations of Particles

10.1093/oso/9780190946814.003.0015 ◽

2021 ◽

pp. 350-374

Author(s):

Anjan Chakravartty

Keyword(s):

Standard Model ◽

Scientific Realism ◽

Particle Physics ◽

Theory Change ◽

Change Over Time ◽

The Standard Model ◽

Selective Realism ◽

The Cost ◽

Over Time

While much debate about scientific realism concerns the issue of whether it is compatible with theory change over time, and certain forms of selective realism have been suggested with this in mind, this chapter considers a closely related challenge for realism: that of articulating how a theory should be interpreted at any given time. In a crucial respect the challenges posed by diachronic and synchronic interpretation are the same; in both cases, realists face an apparent dilemma. The thinner their interpretations, the easier realism is to defend, but at the cost of more substantial commitment. The more substantial their interpretations, the more difficult they are to defend. The chapter looks at this worry in the context of the Standard Model of particle physics. Examining some selective realist attempts at interpretation, it argues that realism is, in fact, compatible with different commitments on the spectrum of thinner to more substantial, thus mitigating the dilemma.

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Indirect measurements in micro-space with the EM

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100139366 ◽

1995 ◽

Vol 53 ◽

pp. 598-599

Author(s):

Sterling P. Newberry

Keyword(s):

Electron Microscope ◽

Standard Model ◽

Particle Physics ◽

Information Storage ◽

Storage Space ◽

Indirect Measurements ◽

Storage And Retrieval ◽

Adequate Information ◽

Compelling Reason ◽

The Standard Model

At the 1958 meeting of our society, then known as EMSA, the author introduced the concept of microspace and suggested its use to provide adequate information storage space and the use of electron microscope techniques to provide storage and retrieval access. At this current meeting of MSA, he wishes to suggest an additional use of the power of the electron microscope.The author has been contemplating this new use for some time and would have suggested it in the EMSA fiftieth year commemorative volume, but for page limitations. There is compelling reason to put forth this suggestion today because problems have arisen in the “Standard Model” of particle physics and funds are being greatly reduced just as we need higher energy machines to resolve these problems. Therefore, any techniques which complement or augment what we can accomplish during this austerity period with the machines at hand is worth exploring.

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Phenomena Beyond the Standard Model: What Do We Expect for New Physics to Look Like?

10.3389/978-2-88963-990-8 ◽

2020 ◽

Keyword(s):

Standard Model ◽

New Physics ◽

Beyond The Standard Model ◽

The Standard Model

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An Interview with the Physicist that Her Head in the Universe and Both Feet on the Earth

10.31227/osf.io/mfv4e ◽

2019 ◽

Author(s):

Adib Rifqi Setiawan

Keyword(s):

Standard Model ◽

Particle Physics ◽

Space Time ◽

Additional Dimension ◽

The Earth ◽

The Standard Model ◽

The Universe

Put simply, Lisa Randall’s job is to figure out how the universe works, and what it’s made of. Her contributions to theoretical particle physics include two models of space-time that bear her name. The first Randall–Sundrum model addressed a problem with the Standard Model of the universe, and the second concerned the possibility of a warped additional dimension of space. In this work, we caught up with Randall to talk about why she chose a career in physics, where she finds inspiration, and what advice she’d offer budding physicists. This article has been edited for clarity. My favourite quote in this interview is, “Figure out what you enjoy, what your talents are, and what you’re most curious to learn about.” If you insterest in her work, you can contact her on Twitter @lirarandall.

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An Interview with the Physicist that Her Head in the Universe and Both Feet on the Earth

10.31229/osf.io/jdw7f ◽

2019 ◽

Author(s):

Adib Rifqi Setiawan

Keyword(s):

Standard Model ◽

Particle Physics ◽

Space Time ◽

Additional Dimension ◽

The Earth ◽

The Standard Model ◽

The Universe

Put simply, Lisa Randall’s job is to figure out how the universe works, and what it’s made of. Her contributions to theoretical particle physics include two models of space-time that bear her name. The first Randall–Sundrum model addressed a problem with the Standard Model of the universe, and the second concerned the possibility of a warped additional dimension of space. In this work, we caught up with Randall to talk about why she chose a career in physics, where she finds inspiration, and what advice she’d offer budding physicists. This article has been edited for clarity. My favourite quote in this interview is, “Figure out what you enjoy, what your talents are, and what you’re most curious to learn about.” If you insterest in her work, you can contact her on Twitter @lirarandall.

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